"Though a relatively new option for tourists, the Crystal Caves of Grand Cayman’s Old Man Bay have been hosting other sorts of visitors since time immemorial: Everyone from bats (who still hang out near the entrance) to farmers (in search of the attendant guano) to pirates (where better to dodge both hurricanes and the law?). Shrouded within a healthy radius of rain forest, these stalactite-and-stalagmite-studded caverns are well worth your visit, too; whether or not you locate the treasure that some of the previous occupants are rumored to have left behind, you’ll find a wealth of natural beauty—especially the reflection of all those formations in the gin-clear rainwater lake."